<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>


<h1><a href="xyy_base.html">首页</a></h1>

{% block hallo %}
{% endblock %}


{% block end %}
{% endblock %}

{% block body %}
{% endblock %}



</body>
</html>